本文整理匯總了C#中System.Drawing.Graphics.GetHalftonePalette方法的典型用法代碼示例。如果您正苦於以下問題：C# Graphics.GetHalftonePalette方法的具體用法？C# Graphics.GetHalftonePalette怎麽用？C# Graphics.GetHalftonePalette使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Drawing.Graphics的用法示例。
在下文中一共展示了Graphics.GetHalftonePalette方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1: SelectPalette
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern IntPtr SelectPalette(
IntPtr hdc,
IntPtr htPalette,
bool bForceBackground);
[System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")]
private static extern int RealizePalette(IntPtr hdc);
[System.Security.Permissions.SecurityPermission(
System.Security.Permissions.SecurityAction.LinkDemand, Flags =
System.Security.Permissions.SecurityPermissionFlag.UnmanagedCode)]
private void GetHalftonePaletteVoid(PaintEventArgs e)
{
// Create and draw image.
Image imageFile = Image.FromFile("SampImag.jpg");
e.Graphics.DrawImage(imageFile, new Point(0, 0));
// Get handle to device context.
IntPtr hdc = e.Graphics.GetHdc();
// Get handle to halftone palette.
IntPtr htPalette = Graphics.GetHalftonePalette();
// Select and realize new palette.
SelectPalette(hdc, htPalette, true);
RealizePalette(hdc);
// Create new graphics object.
Graphics newGraphics = Graphics.FromHdc(hdc);
// Draw image with new palette.
newGraphics.DrawImage(imageFile, 300, 0);
// Release handle to device context.
e.Graphics.ReleaseHdc(hdc);
}